icmp_test.go

Documentation: golang.org/x/net/ipv6

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package ipv6_test
     6  
     7  import (
     8  	"errors"
     9  	"net"
    10  	"reflect"
    11  	"runtime"
    12  	"testing"
    13  
    14  	"golang.org/x/net/ipv6"
    15  	"golang.org/x/net/nettest"
    16  )
    17  
    18  var icmpStringTests = []struct {
    19  	in  ipv6.ICMPType
    20  	out string
    21  }{
    22  	{ipv6.ICMPTypeDestinationUnreachable, "destination unreachable"},
    23  
    24  	{256, "<nil>"},
    25  }
    26  
    27  func TestICMPString(t *testing.T) {
    28  	for _, tt := range icmpStringTests {
    29  		s := tt.in.String()
    30  		if s != tt.out {
    31  			t.Errorf("got %s; want %s", s, tt.out)
    32  		}
    33  	}
    34  }
    35  
    36  func TestICMPFilter(t *testing.T) {
    37  	switch runtime.GOOS {
    38  	case "fuchsia", "hurd", "js", "nacl", "plan9", "wasip1", "windows":
    39  		t.Skipf("not supported on %s", runtime.GOOS)
    40  	}
    41  
    42  	var f ipv6.ICMPFilter
    43  	for _, toggle := range []bool{false, true} {
    44  		f.SetAll(toggle)
    45  		for _, typ := range []ipv6.ICMPType{
    46  			ipv6.ICMPTypeDestinationUnreachable,
    47  			ipv6.ICMPTypeEchoReply,
    48  			ipv6.ICMPTypeNeighborSolicitation,
    49  			ipv6.ICMPTypeDuplicateAddressConfirmation,
    50  		} {
    51  			f.Accept(typ)
    52  			if f.WillBlock(typ) {
    53  				t.Errorf("ipv6.ICMPFilter.Set(%v, false) failed", typ)
    54  			}
    55  			f.Block(typ)
    56  			if !f.WillBlock(typ) {
    57  				t.Errorf("ipv6.ICMPFilter.Set(%v, true) failed", typ)
    58  			}
    59  		}
    60  	}
    61  }
    62  
    63  func TestSetICMPFilter(t *testing.T) {
    64  	if !nettest.SupportsIPv6() {
    65  		t.Skip("ipv6 is not supported")
    66  	}
    67  	if !nettest.SupportsRawSocket() {
    68  		t.Skipf("not supported on %s/%s", runtime.GOOS, runtime.GOARCH)
    69  	}
    70  
    71  	c, err := net.ListenPacket("ip6:ipv6-icmp", "::1")
    72  	if err != nil {
    73  		t.Fatal(err)
    74  	}
    75  	defer c.Close()
    76  
    77  	p := ipv6.NewPacketConn(c)
    78  
    79  	var f ipv6.ICMPFilter
    80  	f.SetAll(true)
    81  	f.Accept(ipv6.ICMPTypeEchoRequest)
    82  	f.Accept(ipv6.ICMPTypeEchoReply)
    83  	if err := p.SetICMPFilter(&f); errors.Is(err, ipv6.ErrNotImplemented) {
    84  		t.Skipf("setting ICMP filter not supported: %v", err)
    85  	} else if err != nil {
    86  		t.Fatal(err)
    87  	}
    88  
    89  	kf, err := p.ICMPFilter()
    90  	if err != nil {
    91  		t.Fatal(err)
    92  	}
    93  	if !reflect.DeepEqual(kf, &f) {
    94  		t.Fatalf("got %#v; want %#v", kf, f)
    95  	}
    96  }
    97
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